<html>
  <head>
    <style>
      html,body {
        margin: 0;
        padding: 0;
      }
      .canvas-bg {
        background-image:
          linear-gradient(#aaaaaa40 1px, transparent 0),
          linear-gradient(90deg, #aaaaaa40 1px, transparent 0),
          linear-gradient(#aaa 1px, transparent 0),
          linear-gradient(90deg, #aaa 1px, transparent 0);
        background-size: 10px 10px, 10px 10px, 50px 50px, 50px 50px;
        width: 601px;
        height: 601px;
      }
    </style>
    <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no">
  </head>
  <body>

    <canvas width="601" height="601" id="canvas" class="canvas-bg"></canvas>

    <script src="../../../packages/util/dist/index.global.js"></script>
    <script type="module" src="./main.js"></script>
  </body>
</html>